Crazy Basque dancing

I found this while looking for fandango, the impossible dance, as I thought of it after my one attempt at a workshop. How can you stay on your toes with your arms in the air for so long?!

I guess this is probably related, or maybe it is a kind of fandango. If you can read the Basque, write and tell me all about it!

(If it's not Basque, write and straighten me out!)